Imperial College London
Alternate

ProfessorThomasAnthopoulos

Faculty of Natural Sciences, Department of Physics

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 6669thomas.anthopoulos Website

 
 
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Assistant

 

Mrs Carolyn Dale +44 (0)20 7594 7579

 
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Location

 

1111Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Eisner:2022:10.1002/adma.202104654,
author = {Eisner, F and Foot, G and Yan, J and Azzouzi, M and Georgiadou, DG and Sit, WY and Firdaus, Y and Zhang, G and Lin, Y-H and Yip, H-L and Anthopoulos, TD and Nelson, J},
doi = {10.1002/adma.202104654},
journal = {Advanced Materials},
title = {Emissive charge-transfer states at hybrid inorganic/organic heterojunctions enable low non-radiative recombination and high-performance photodetectors},
url = {http://dx.doi.org/10.1002/adma.202104654},
volume = {34},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Hybrid devices based on a heterojunction between inorganic and organic semiconductors have offered a means to combine the advantages of both classes of materials in optoelectronic devices, but, in practice, the performance of such devices has often been disappointing. Here, it is demonstrated that charge generation in hybrid inorganic–organic heterojunctions consisting of copper thiocyanate (CuSCN) and a variety of molecular acceptors (ITIC, IT-4F, Y6, PC70BM, C70, C60) proceeds via emissive charge-transfer (CT) states analogous to those found at all-organic heterojunctions. Importantly, contrary to what has been observed at previous organic–inorganic heterojunctions, the dissociation of the CT-exciton and subsequent charge separation is efficient, allowing the fabrication of planar photovoltaic devices with very low non-radiative voltage losses (0.21 ± 0.02 V). It is shown that such low non-radiative recombination enables the fabrication of simple and cost-effective near-IR (NIR) detectors with extremely low dark current (4 pA cm−2) and noise spectral density (3 fA Hz−1/2) at no external bias, leading to specific detectivities at NIR wavelengths of just under 1013 Jones, close to the performance of commercial silicon photodetectors. It is believed that this work demonstrates the possibility for hybrid heterojunctions to exploit the unique properties of both inorganic and organic semiconductors for high-performance opto-electronic devices.
AU  - Eisner,F
AU  - Foot,G
AU  - Yan,J
AU  - Azzouzi,M
AU  - Georgiadou,DG
AU  - Sit,WY
AU  - Firdaus,Y
AU  - Zhang,G
AU  - Lin,Y-H
AU  - Yip,H-L
AU  - Anthopoulos,TD
AU  - Nelson,J
DO  - 10.1002/adma.202104654
PY  - 2022///
SN  - 0935-9648
TI  - Emissive charge-transfer states at hybrid inorganic/organic heterojunctions enable low non-radiative recombination and high-performance photodetectors
T2  - Advanced Materials
UR  - http://dx.doi.org/10.1002/adma.202104654
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000703766200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/92934
VL  - 34
ER  -
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